Aboveground Biomass Maps for Howland Research Forest, Maine, 2012-2025

This dataset provides aboveground biomass (AGB) maps at 10-m spatial resolution for the Howland Research Forest in central Maine for the years 2012, 2015, 2017, 2021, 2023, and 2025. Forest inventory measurements were collected from 38 plots during the summers of 2024 and 2025. Airborne LiDAR data were obtained from multiple sources and acquisition periods. The USGS 3D Elevation Program 3DEP data were acquired in 2015 and 2023 under leaf-off conditions. The NASA G-LiHT project collected data in 2012, 2017, and 2021 under leaf-on conditions. An additional leaf-on survey was conducted on 13 August 2025 using the Phoenix RANGER-U580 system (Riegl VQ-580II-S laser scanner). Area-based Random Forest models were calibrated separately for leaf-off conditions using USGS 3DEP 2023 data and for leaf-on conditions using Phoenix 2025 data. Each calibrated model was applied to LiDAR datasets acquired under the corresponding seasonal conditions to produce wall-to-wall AGB maps for each acquisition year. The data are provided in cloud optimized GeoTIFF format; one for each year.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated October 27, 2026, 03:36 (UTC)
Created June 3, 2026, 00:38 (UTC)
Identifier 10.3334/ORNLDAAC/2490
Modified 2026-10-19T22:16:07Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 006496a7-6c52-43bb-a7c7-2c6a4b88ce3d
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash aace58de77719b8ff7b4ee9bcc12eca8f38ed35f2c78162fb62e97b9b6da8a19
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -68.7578, "NorthBoundingCoordinate": 45.2278, "EastBoundingCoordinate": -68.7064, "SouthBoundingCoordinate": 45.1902}]]
temporal 2012-01-01/2025-12-31